1.ns.ph has no CNAME records.
Question and response
Question
dig 1.ns.ph. NS
Answer
The response has no answer records.
Authority
ph. 1560 SOA ph-tld-ns.dot.ph. sysadmin.domains.ph. 2026022702 21600 3600 2592000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0